Marin Ivezic

I am the Founder of Applied Quantum (AppliedQuantum.com), a research-driven consulting firm empowering organizations to seize quantum opportunities and proactively defend against quantum threats. A former quantum entrepreneur, I’ve previously served as a Fortune Global 500 CISO, CTO, Big 4 partner, and leader at Accenture and IBM. Throughout my career, I’ve specialized in managing emerging tech risks, building and leading innovation labs focused on quantum security, AI security, and cyber-kinetic risks for global corporations, governments, and defense agencies. I regularly share insights on quantum technologies and emerging-tech cybersecurity at PostQuantum.com.

Quantum Computing Modalities

Marin IvezicSeptember 16, 2023

Quantum Computing Modalities: Fibonacci Anyons

Fibonacci anyons are a type of non-Abelian anyon – exotic quasiparticles that can exist in two-dimensional systems and have exchange statistics beyond bosons or fermions. When two non-Abelian anyons like Fibonacci anyons are exchanged (braided) in space, the quantum state…
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Q-Day

Marin IvezicSeptember 15, 2023

What Will Really Happen Once Q-Day Arrives – When Our Current Cryptography Is Broken?

As the world edges closer to the era of powerful quantum computers, experts warn of an approaching “Q-Day” (sometimes called Y2Q or the Quantum Apocalypse): the day a cryptographically relevant quantum computer can break our current encryption. Unlike the Y2K…
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Quantum Computing Modalities

Marin IvezicSeptember 14, 2023

Quantum Computing Modalities: QA With Digital Boost (“Bang-Bang” Annealing)

Digital Boost (“Bang-Bang” Annealing) refers to augmenting or replacing the continuous, gradual annealing schedule with discrete pulses or abrupt changes in the control parameters – essentially applying bang–bang control to quantum annealing. In control theory, a bang–bang controller is one…
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Quantum Computing Modalities

Marin IvezicSeptember 13, 2023

Quantum Computing Modalities: Dissipative QC (DQC)

Dissipative Quantum Computing (DQC) is a model of quantum computation that leverages open quantum system dynamics – in other words, it uses controlled dissipation (interaction with an environment and irreversible processes) as a resource for computing.
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Quantum Computing Modalities

Marin IvezicSeptember 12, 2023

Quantum Computing Modalities: Majorana Qubits

Majorana qubits promise hardware-level error protection through topological physics. Microsoft has spent over a decade and billions of dollars pursuing them. Here's the physics of how they're supposed to work, the full experimental history, and why the evidence remains contested.
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Quantum Computing Modalities

Marin IvezicSeptember 10, 2023

Quantum Computing Modalities: Biological QC

Biological Quantum Computing refers to speculative ideas that biological systems might perform quantum computations or that we could harness biological processes to implement quantum computing. This paradigm is highly exploratory and not yet realized in any form, lying at the…
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Quantum Computing Modalities

Marin IvezicSeptember 10, 2023

Quantum Computing Modalities: Boson Sampling QC (Gaussian & Non-Gaussian)

Boson Sampling is a specialized, non-universal model of quantum computation where the goal is to sample from the output distribution of indistinguishable bosons (typically photons) that have passed through a passive linear interferometer. In simpler terms, one prepares multiple photons,…
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Quantum Computing Modalities

Marin IvezicSeptember 9, 2023

Quantum Computing Modalities: Quantum Cellular Automata (QCA)

Quantum Cellular Automata are an abstract paradigm of quantum computing where space and time are discrete and quantum information processing happens in many parallel identical cells interacting with neighbors under a uniform rule. It’s a quantum counterpart to classical cellular…
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Quantum Computing Modalities

Marin IvezicSeptember 8, 2023

Quantum Computing Modalities: Time Crystals’ Potential QC Use

Time crystals are an exotic state of matter that spontaneously breaks time-translation symmetry, meaning the system’s lowest-energy state exhibits periodic motion in time. This is analogous to how ordinary crystals break spatial translation symmetry by arranging atoms in a repeating…
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Society 5.0

Marin IvezicSeptember 7, 2023

Will the Kingdom of Saudi Arabia (KSA) beat Japan to Society 5.0?

Ask most people what they remember from 2016 – if they remember anything at all – and there are usually two big events that float to the front of their minds: Britain voted to leave the European Union and the…
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Quantum Computing Modalities

Marin IvezicSeptember 6, 2023

Quantum Computing Modalities: DNA-Based QIP

DNA-based quantum information processing envisions using DNA – the molecule of life – in roles within a quantum computer. This could mean DNA acting as qubits, facilitating quantum interactions, or serving as a structural scaffold for other qubits. It's an…
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Quantum Computing Modalities

Marin IvezicSeptember 5, 2023

Quantum Computing Modalities: One-Clean-Qubit Model (DQC1)

The One-Clean-Qubit model, also known as Deterministic Quantum Computation with One Qubit (DQC1), is a restricted quantum computing paradigm where only a single qubit starts in a pure (or “clean”) state while all other qubits are in a completely mixed…
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Quantum Computing Modalities

Marin IvezicSeptember 4, 2023

Quantum Computing Modalities: Exotic and Emerging QC

Overview of “exotic and emerging” quantum computing paradigms and discuss why they exist, what common themes link them, how they compare to mainstream quantum computers, and what implications they might hold for the future. We also introduce each paradigm in…
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Quantum Computing Modalities

Marin IvezicSeptember 3, 2023

Quantum Computing Modalities: Photonic Continuous-Variable QC (CVQC)

Photonic continuous-variable quantum computing (CVQC) is an approach to quantum computation that uses quantum states with continuously varying quantities (like the amplitude or phase of an electromagnetic field) instead of discrete two-level systems (qubits).
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Quantum Computing Modalities

Marin IvezicSeptember 1, 2023

Quantum Computing Modalities: Hybrid QC Architectures

Hybrid quantum computing architectures refer to combining different types of quantum systems or integrating quantum subsystems with one another (and often with classical systems) to create a more powerful or versatile computer. This can mean hybridizing physical qubit modalities (e.g.,…
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